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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: AbstractSpringSchemaUpdate.html 689 2013-06-28 19:22:16Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.schema;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.HashSet;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import org.springframework.beans.factory.BeanFactory;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.springframework.beans.factory.BeanFactoryAware;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.springframework.beans.factory.BeanNameAware;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.springframework.beans.factory.BeanNotOfRequiredTypeException;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.springframework.beans.factory.InitializingBean;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.springframework.beans.factory.NoSuchBeanDefinitionException;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.springframework.beans.factory.config.ConfigurableBeanFactory;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>/**<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Support superclass for {@link SchemaUpdate}s declared in Spring {@link BeanFactory}s that infer their<a name="line.21"></a>
<span class="sourceLineNo">022</span> * names and required predecessors from their Spring bean attributes.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * &lt;p&gt;<a name="line.24"></a>
<span class="sourceLineNo">025</span> * Instances infer their {@linkplain #getName name} and {@linkplain #getRequiredPredecessors required predecessors} from<a name="line.25"></a>
<span class="sourceLineNo">026</span> * their Spring bean name (specified by the &lt;code&gt;id&lt;/code&gt; XML attribute) and Spring dependencies (specified by<a name="line.26"></a>
<span class="sourceLineNo">027</span> * the &lt;code&gt;depends-on&lt;/code&gt; XML attribute), respectively.<a name="line.27"></a>
<span class="sourceLineNo">028</span> *<a name="line.28"></a>
<span class="sourceLineNo">029</span> * &lt;p&gt;<a name="line.29"></a>
<span class="sourceLineNo">030</span> * Note: the use of &lt;code&gt;depends-on&lt;/code&gt; is an abuse of Spring's dependency notation for convenience. Normally<a name="line.30"></a>
<span class="sourceLineNo">031</span> * &lt;code&gt;depends-on&lt;/code&gt; refers to bean intialization ordering, whereas this class uses it to refer to schema update ordering.<a name="line.31"></a>
<span class="sourceLineNo">032</span> * Schema updates are not normally expected to have any initialization ordering requirements, so this abuse shouldn't matter.<a name="line.32"></a>
<span class="sourceLineNo">033</span> * If they do, this class should not be used.<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * &lt;p&gt;<a name="line.35"></a>
<span class="sourceLineNo">036</span> * The containing {@link BeanFactory} must be a {@link ConfigurableBeanFactory} (normally this is always the case).<a name="line.36"></a>
<span class="sourceLineNo">037</span> *<a name="line.37"></a>
<span class="sourceLineNo">038</span> * @param &lt;T&gt; database transaction type<a name="line.38"></a>
<span class="sourceLineNo">039</span> */<a name="line.39"></a>
<span class="sourceLineNo">040</span>public abstract class AbstractSpringSchemaUpdate&lt;T&gt; extends AbstractSchemaUpdate&lt;T&gt;<a name="line.40"></a>
<span class="sourceLineNo">041</span>  implements BeanNameAware, BeanFactoryAware, InitializingBean {<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span>    protected String beanName;<a name="line.43"></a>
<span class="sourceLineNo">044</span>    protected BeanFactory beanFactory;<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span>    @Override<a name="line.46"></a>
<span class="sourceLineNo">047</span>    public void setBeanName(String beanName) {<a name="line.47"></a>
<span class="sourceLineNo">048</span>        this.beanName = beanName;<a name="line.48"></a>
<span class="sourceLineNo">049</span>    }<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    @Override<a name="line.51"></a>
<span class="sourceLineNo">052</span>    public void setBeanFactory(BeanFactory beanFactory) {<a name="line.52"></a>
<span class="sourceLineNo">053</span>        this.beanFactory = beanFactory;<a name="line.53"></a>
<span class="sourceLineNo">054</span>    }<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span>    /**<a name="line.56"></a>
<span class="sourceLineNo">057</span>     * Configures the update name and required predecessors based on the Spring bean's name and<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * {@link BeanFactory} dependencies.<a name="line.58"></a>
<span class="sourceLineNo">059</span>     */<a name="line.59"></a>
<span class="sourceLineNo">060</span>    @Override<a name="line.60"></a>
<span class="sourceLineNo">061</span>    public void afterPropertiesSet() throws Exception {<a name="line.61"></a>
<span class="sourceLineNo">062</span>        if (this.beanFactory == null)<a name="line.62"></a>
<span class="sourceLineNo">063</span>            throw new IllegalArgumentException("no BeanFactory configured");<a name="line.63"></a>
<span class="sourceLineNo">064</span>        if (this.beanName == null)<a name="line.64"></a>
<span class="sourceLineNo">065</span>            throw new IllegalArgumentException("no beanName configured");<a name="line.65"></a>
<span class="sourceLineNo">066</span>        this.setName(this.beanName);<a name="line.66"></a>
<span class="sourceLineNo">067</span>        this.setRequiredPredecessorsFromDependencies();<a name="line.67"></a>
<span class="sourceLineNo">068</span>    }<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span>    /**<a name="line.70"></a>
<span class="sourceLineNo">071</span>     * Infer required predecessors from Spring dependencies.<a name="line.71"></a>
<span class="sourceLineNo">072</span>     *<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * @throws IllegalArgumentException if this instance's {@code beanFactory} is not yet configured,<a name="line.73"></a>
<span class="sourceLineNo">074</span>     *  or not a {@link ConfigurableBeanFactory}<a name="line.74"></a>
<span class="sourceLineNo">075</span>     */<a name="line.75"></a>
<span class="sourceLineNo">076</span>    @SuppressWarnings("unchecked")<a name="line.76"></a>
<span class="sourceLineNo">077</span>    protected void setRequiredPredecessorsFromDependencies() {<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>        // Check factory type<a name="line.79"></a>
<span class="sourceLineNo">080</span>        if (!(this.beanFactory instanceof ConfigurableBeanFactory))<a name="line.80"></a>
<span class="sourceLineNo">081</span>            throw new IllegalArgumentException("BeanFactory is not a ConfigurableBeanFactory: " + this.beanFactory);<a name="line.81"></a>
<span class="sourceLineNo">082</span>        ConfigurableBeanFactory configurableBeanFactory = (ConfigurableBeanFactory)this.beanFactory;<a name="line.82"></a>
<span class="sourceLineNo">083</span><a name="line.83"></a>
<span class="sourceLineNo">084</span>        // Find required predecessors defined as Spring dependencies<a name="line.84"></a>
<span class="sourceLineNo">085</span>        String[] predecessorNames = configurableBeanFactory.getDependenciesForBean(this.beanName);<a name="line.85"></a>
<span class="sourceLineNo">086</span>        HashSet&lt;SchemaUpdate&lt;T&gt;&gt; predecessors = new HashSet&lt;SchemaUpdate&lt;T&gt;&gt;(predecessorNames.length);<a name="line.86"></a>
<span class="sourceLineNo">087</span>        for (String predecessorName : predecessorNames) {<a name="line.87"></a>
<span class="sourceLineNo">088</span>            try {<a name="line.88"></a>
<span class="sourceLineNo">089</span>                predecessors.add((SchemaUpdate&lt;T&gt;)configurableBeanFactory.getBean(predecessorName, SchemaUpdate.class));<a name="line.89"></a>
<span class="sourceLineNo">090</span>            } catch (NoSuchBeanDefinitionException e) {<a name="line.90"></a>
<span class="sourceLineNo">091</span>                continue;<a name="line.91"></a>
<span class="sourceLineNo">092</span>            } catch (BeanNotOfRequiredTypeException e) {<a name="line.92"></a>
<span class="sourceLineNo">093</span>                continue;<a name="line.93"></a>
<span class="sourceLineNo">094</span>            }<a name="line.94"></a>
<span class="sourceLineNo">095</span>        }<a name="line.95"></a>
<span class="sourceLineNo">096</span>        this.setRequiredPredecessors(predecessors);<a name="line.96"></a>
<span class="sourceLineNo">097</span>    }<a name="line.97"></a>
<span class="sourceLineNo">098</span>}<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>




























































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